CN105854571A - Novel medical waste incineration flue gas purification system - Google Patents

Novel medical waste incineration flue gas purification system Download PDF

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Publication number
CN105854571A
CN105854571A CN201610443328.XA CN201610443328A CN105854571A CN 105854571 A CN105854571 A CN 105854571A CN 201610443328 A CN201610443328 A CN 201610443328A CN 105854571 A CN105854571 A CN 105854571A
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CN
China
Prior art keywords
tower
flue gas
medical waste
novel medical
heat boiler
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Pending
Application number
CN201610443328.XA
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Chinese (zh)
Inventor
肖燕
陈竹
李军
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Nantong Tianlan Environmental Protection and Energy Equipment Co Ltd
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Nantong Tianlan Environmental Protection and Energy Equipment Co Ltd
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Priority to CN201610443328.XA priority Critical patent/CN105854571A/en
Publication of CN105854571A publication Critical patent/CN105854571A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023Pockets filters, i.e. multiple bag filters mounted on a common frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30Particle separators, e.g. dust precipitators, using loose filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/501Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/54Nitrogen compounds
    • B01D53/56Nitrogen oxides
    • B01D53/565Nitrogen oxides by treating the gases with solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/68Halogens or halogen compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/68Halogens or halogen compounds
    • B01D53/70Organic halogen compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81Solid phase processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • B01D2258/0291Flue gases from waste incineration plants
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Abstract

The invention provides a novel medical waste incineration flue gas purification system and relates to the field of flue gas treatment equipment. The novel medical waste incineration flue gas purification system comprises a waste heat boiler, a quenching tower, a dry-type deacidification tower, an activated carbon adsorption storage tank, a bag-type dust collector and an activated coke adsorption tower which are sequentially connected in series, wherein a heating medium inlet of the waste heat boiler is taken as an inlet of medical waste incineration flue gas, and the outlet end of the activated coke adsorption tower is connected with a chimney. The novel medical waste incineration flue gas purification system has the advantages that purification efficiency and purification effect of medical waste incineration flue gas can be obviously improved, desulphurization and denitration effects are good, multiple pollutants (such as smoke particles, heavy metals such as mercury, and dioxin) can be removed at the same time, and no secondary pollution is produced, so that environmental pollution is reduced.

Description

Novel medical waste incinerated smoke purification system
Technical field
The present invention relates to field of fume treatment equipment, be specially a kind of Novel medical waste incinerated smoke purification system.
Background technology
Pollutant in medical refuse burning flue gas include sour gas (HCl, HF, SO2, NOx etc.), particulate matter (dust), heavy metal (Hg, Pb, Cr etc.) and organic toxic pollutant (two English, furan etc.) four big classes.In order to prevent medical wastes incineration processing procedure from environment is caused secondary pollution, it is necessary to adopt rigid measures, flue gas purification system is utilized to control the discharge of pollutant.But it is the lowest that present stage China's medical refuse burning technology overall technology compares level than American-European-Japanese developed country, often occur burning the problems such as hazardous waste is thorough, discharge is the most up to standard.
Denitrogenation is a part critically important in flue gas purifying technique, and in conventional denitrification process, the optimal reaction temperature of SCR is 370 DEG C, this technique will be applied to need flue gas and carry out reheating;The Process window of SNCR is 900 DEG C~1100 DEG C, and in long-term running, the denitrification reaction of the incinerator that load variations to be controlled is bigger is highly difficult in being constantly in the narrowest temperature window, and ammonia excess easily occurs.Conventional denitrogenation technology all also exists temperature parameter inappropriate common drawback when being applied to incinerator, even if there being indivedual temperature range suitable, but nitric efficiency is the lowest, does not reaches emission request at all.
Summary of the invention
It is an object of the invention to provide a kind of Novel medical waste incinerated smoke purification system, this cleaning system has that desulphurization and denitration is effective, non-secondary pollution, the advantage that can simultaneously remove multiple pollutant (heavy metal such as smoke particle, hydrargyrum, two English etc.).
The technical scheme realizing above-mentioned purpose is: Novel medical waste incinerated smoke purification system, it is characterized in that: include waste heat boiler, chilling tower, dry type extracting tower, activated carbon adsorption storage tank, sack cleaner and the activated coke adsorption tower being sequentially connected in series, the Heating medium of waste heat boiler connects chimney as the import of medical refuse burning flue gas, the port of export of activated coke adsorption tower.
Described activated coke adsorption tower includes tower body, is provided with activity focus layer in tower body, and the top of tower body is provided with activated coke import, and bottom arranges slag notch, is provided with outlet valve in slag notch, and the bottom of described tower body is provided with gas approach, and top is provided with exhanst gas outlet.
Activated coke adsorption tower is also associated with ammonia injected system, described liquefied ammonia injects liquid ammonia storage tank, liquid ammonia evaporator, control valve and the diluent air blower fan that the system of sending out includes being sequentially connected with, the port of export of diluent air blower fan is connected to the middle part of tower body, and between liquid ammonia evaporator and control valve, side is connected to high pressure positive blower.
Preferably, the cooling medium of chilling tower uses lime slurry.
Described waste heat boiler connects has nitrogen rejection facility, described nitrogen rejection facility to include urea liquid storage tank and the high pressure nozzle being arranged in waste heat boiler, and described urea liquid storage tank is connected with high pressure nozzle by high-pressure pump.
The present invention can significantly improve purification efficiency and the clean-up effect of medical refuse burning tail gas, and desulphurization and denitration is effective, can also remove multiple pollutant (heavy metal such as smoke particle, hydrargyrum, two English etc.), non-secondary pollution simultaneously, thus reduces environmental pollution.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of the present invention.
Detailed description of the invention
As shown in Figure 1, the present invention includes waste heat boiler 1, chilling tower 2, dry type extracting tower 3, activated carbon adsorption storage tank 4, sack cleaner 5 and the activated coke adsorption tower 6 being sequentially connected in series, waste heat boiler 1 uses fin panel casing steam boiler, vertical, the cooling medium of chilling tower 2 uses lime slurry, the Heating medium of waste heat boiler 1 connects chimney 7 as the import of medical refuse burning flue gas, the port of export of activated coke adsorption tower 6.
Waste heat boiler 1 is also associated with nitrogen rejection facility, and nitrogen rejection facility includes that urea liquid storage tank 20 and the high pressure nozzle 21 being arranged in waste heat boiler, urea liquid storage tank 20 are connected with high pressure nozzle 21 by high-pressure pump 22,
Activated coke adsorption tower 6 includes tower body 8, is provided with activity focus layer 9 in tower body 8, and the top of tower body is provided with activated coke import 10, bottom arranges slag notch 11, being provided with outlet valve 12 in slag notch 11, the bottom of tower body 12 is provided with gas approach 13, and top is provided with exhanst gas outlet 14.
Activated coke adsorption tower 6 is also associated with ammonia injected system, liquefied ammonia injects liquid ammonia storage tank 15, liquid ammonia evaporator 16, control valve 17 and the diluent air blower fan 18 that the system of sending out includes being sequentially connected with, the port of export of diluent air blower fan 18 is connected to the middle part of tower body 12, and between liquid ammonia evaporator 16 and control valve 17, side is connected to high pressure positive blower 19.
The work process of the present invention:
Medical refuse burning flue gas enters waste heat boiler 1, and the partial heat energy in flue gas is reclaimed and produces steam by waste heat boiler 1.Boiler inlet flue-gas temperature 1150 DEG C, outlet temperature 550 DEG C, its major parameter: feed temperature 104 DEG C, steam pressure 1.0Mpa, vapor (steam) temperature 184 DEG C.
Flue gas, while waste heat boiler 1, sprays into atomization urea liquid in waste heat boiler 1, it is achieved one-level denitrogenation.
Waste heat boiler 1 exiting flue gas enters chilling tower 2, chilling cooling in chilling tower 2.Chilling tower 2 entrance flue gas temperature about 500 DEG C, exit gas temperature is less than 200 DEG C, and flue gas is not more than 1s cool time;Flue gas spray into atomizer in chilling tower 20% Ca (OH) 2 serosity sufficiently mix, the sour gas such as SOx, HCl in flue gas is removed after being neutralized reaction with Ca (OH) 2.
Flue gas enters back into dry type extracting tower 3, in dry type extracting tower 3, and the sour gas in flue gas and the heavy metal in slaked lime generation neutralization, flue gas etc. and activated carbon generation adsorption, all obtain a certain degree of removal;Dry type extracting tower 3 exiting flue gas enters sack cleaner 5, and in sack cleaner 5, the suspended particulate substance (heavy metal such as dust, being tightly held by activated carbon and dioxin-like chemical etc.) in flue gas is intercepted by filter bag, discharges with the form of flying dust;Flue gas after sack cleaner 5 enters activated coke adsorption tower 6 and removes the pollutant such as nitrogen oxides, sulfide, and the flue gas after purification enters air by chimney 7.
Flue gas is through activated coke adsorption tower 6, exhaust gas temperature window 100 DEG C~200 DEG C time, by ammonia injected system nitrogen injection in activated coke adsorption tower 6, complete two grades of denitrogenations, it is capable of efficient combined desulfurization denitrogenation, simultaneously can be with all harmful substances such as adsorbing and removing heavy metal, dioxin.After coordinating chilling tower alkali liquor spray thick desulfurization, chlorine, activated coke purifies technique and is particularly suitable for the most thousand of to this little exhaust gas volumn of several ten thousand steres, the vent gas treatment process of high NOx content.

Claims (5)

1. Novel medical waste incinerated smoke purification system, it is characterized in that: include waste heat boiler, chilling tower, dry type extracting tower, activated carbon adsorption storage tank, sack cleaner and the activated coke adsorption tower being sequentially connected in series, the Heating medium of waste heat boiler connects chimney as the import of medical refuse burning flue gas, the port of export of activated coke adsorption tower.
Novel medical waste incinerated smoke purification system the most according to claim 1, it is characterized in that: described activated coke adsorption tower includes tower body, activity focus layer it is provided with in tower body, the top of tower body is provided with activated coke import, bottom arranges slag notch, being provided with outlet valve in slag notch, the bottom of described tower body is provided with gas approach, and top is provided with exhanst gas outlet.
Novel medical waste incinerated smoke purification system the most according to claim 2, it is characterized in that: activated coke adsorption tower is also associated with ammonia injected system, described liquefied ammonia injects liquid ammonia storage tank, liquid ammonia evaporator, control valve and the diluent air blower fan that the system of sending out includes being sequentially connected with, the port of export of diluent air blower fan is connected to the middle part of tower body, and between liquid ammonia evaporator and control valve, side is connected to high pressure positive blower.
4. according to the Novel medical waste incinerated smoke purification system described in claim 1,2 or 3, it is characterised in that: the cooling medium of described chilling tower uses lime slurry.
Novel medical waste incinerated smoke purification system the most according to claim 4, it is characterized in that: described waste heat boiler is also associated with nitrogen rejection facility, described nitrogen rejection facility includes urea liquid storage tank and the high pressure nozzle being arranged in waste heat boiler, and described urea liquid storage tank is connected with high pressure nozzle by high-pressure pump.
CN201610443328.XA 2016-06-21 2016-06-21 Novel medical waste incineration flue gas purification system Pending CN105854571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610443328.XA CN105854571A (en) 2016-06-21 2016-06-21 Novel medical waste incineration flue gas purification system

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106215616A (en) * 2016-08-29 2016-12-14 合肥合意环保科技工程有限公司 A kind of administering method of gaseous contaminant
CN106512605A (en) * 2016-12-20 2017-03-22 航天凯天环保科技股份有限公司 Waste incineration flue gas purification system
CN110201464A (en) * 2019-07-05 2019-09-06 上海环境工程设计研究院有限公司 High dust-laden, High water cut, the purification process of high sulfur-containing smoke gas and flue gas purification system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203043801U (en) * 2013-01-23 2013-07-10 中国神华能源股份有限公司 Flue gas pollutant removal device
CN103623670A (en) * 2013-11-13 2014-03-12 江苏和顺环保股份有限公司 Flue gas purification treatment system
CN203750409U (en) * 2014-01-28 2014-08-06 上海黎明资源再利用有限公司 Flue gas purifying treatment device in waste incineration process
CN104147915A (en) * 2014-07-18 2014-11-19 广东华信达节能环保有限公司 Flue gas treatment method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203043801U (en) * 2013-01-23 2013-07-10 中国神华能源股份有限公司 Flue gas pollutant removal device
CN103623670A (en) * 2013-11-13 2014-03-12 江苏和顺环保股份有限公司 Flue gas purification treatment system
CN203750409U (en) * 2014-01-28 2014-08-06 上海黎明资源再利用有限公司 Flue gas purifying treatment device in waste incineration process
CN104147915A (en) * 2014-07-18 2014-11-19 广东华信达节能环保有限公司 Flue gas treatment method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106215616A (en) * 2016-08-29 2016-12-14 合肥合意环保科技工程有限公司 A kind of administering method of gaseous contaminant
CN106512605A (en) * 2016-12-20 2017-03-22 航天凯天环保科技股份有限公司 Waste incineration flue gas purification system
CN110201464A (en) * 2019-07-05 2019-09-06 上海环境工程设计研究院有限公司 High dust-laden, High water cut, the purification process of high sulfur-containing smoke gas and flue gas purification system

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Application publication date: 20160817